I’ve specifically said “behavior resulting from …”, not lack of sleep itself.
About visceral disgust and hatred - well, I’ve met one girl with weight problems recently. She’s one of the most charming people I’ve met, and attractive too. Before meeting her I (in imagination and first impressions) almost shared that, because I’ve known some unpleasant people with excess weight at school and in my childhood.
Point being, many other traits are met with hatred by some people with pseudonymity. Cowards are like that.